Find the product.
526 × 7 =
Estimate the sum or difference.
4,563 + 864 →
3,762 − 3,182 →
A library has 24 rows of books with each row having 135 books. How many books are there in total?
3,240
2,250
3,150
2,440
Complete the pattern by skip counting.
9, , 27, 36, , , 63, , 81,
, 12, 18, , , 36, , 48, , 60